What do you mean, why? [what a stupid question, honestly.]

She was found in Texas by this guy who was helping his friend move his mom's stuff out of her house when she died, and this doll showed up on top of the boxes to be taken out to the truck, okay. And the guy thought his friend was the one who put her there, but when the friend saw it, he just told the guy to throw it out. He said he hated it. But the guy kept her instead. He took her home... creepy things started happening...

[he trails off, waving his hand to indicate that there's more to the story.]

And now she's mine.